Catalyst for Olefin Polymerization and Polymerization Method Using the Same

a technology of olefin polymerization and catalyst, which is applied in the field of catalyst for olefin polymerization, can solve the problems of not having satisfactory performance in view of polymerization activity and stereoregularity, method also not having satisfactory performance in view of hydrogen response and stereoregularity upon polymerization, etc., to achieve high stereoregularity, low cost, and high fluidity
US20080293898A1Inactive Publication Date: 2008-11-27MITSUI CHEM INC
4 Cites 5 Cited by

Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
MITSUI CHEM INC
Publication Date
2008-11-27
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

Disclosed is a catalyst for olefin polymerization, comprising: Component [A]: a prepolymer obtained by olefin prepolymerization on solid titanium catalyst component having an average particle size of 25 to 70 μm produced by contacting of a solid component (i) having an average particle size of 26 to 75 μm, containing magnesium, titanium, halogen, and an electron donor (c3), and being free from detachment of titanium by washing with hexane at 25° C., a polar compound (ii) having a dipole moment of 0.50 to 4.00 Debye, and at least one compound (iii) selected from liquid titanium (d) and an electron donor (e), in which the content of titanium in the solid component (i) is reduced by ≧25% by weight, and the weight ratio of the sum of the electron donor (c3) and the electron donor (e) to titanium [electron donor (c3+e) / titanium atoms] is ≧7;Component [B]: an organometallic compound; andComponent [C]: an organosilicon compound represented by the following formula (I):Si(OR1)3(NR2R3)   (I)(wherein R1 is a hydrocarbon group having 1 to 8 carbon atoms, R2 is a hydrocarbon group having 1 to 12 carbon atoms or hydrogen atom, R3 is a hydrocarbon group having 1 to 12 carbon atoms).According to the catalyst, an olefin polymer having high stereoregularity and low molecular weight (high fluidity) can be efficiently provided.
Need to check novelty before this filing date? Find Prior Art

Description

TECHNICAL FIELD

[0001] The present invention relates to a catalyst for olefin polymerization, to method for polymerizing an olefin using the catalyst for olefin polymerization, and to an olefinic polymer obtained by the polymerization method.BACKGROUND ART

[0002] Catalysts comprising a titanium catalyst component and an organoaluminum compound have been commonly known hitherto as those for producing polyolefins. In particular, catalysts using a carrier-supported solid titanium catalyst component as the titanium catalyst component are known to exhibit a high polymerization activity. Above all, the catalysts using a titanium catalyst component supported on magnesium chloride as the solid titanium catalyst component are known to exhibit a high polymerization activity, and to produce polyolefins having high stereoregularity when olefins such as propylene and butene are polymerized. Further, as a catalyst for producing a polyolefin having higher stereoregularity, there has been proposed, for...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More